Stainless steel fittings used in selected cases, must follow the model selection criteria of goods when choosing to pay attention to the type, the temperature of the fluid. Select appropriate type of fluid, temperature of the material and sealing material itself. On the basis of fluid, The

Needle valve is an important part of measuring line system. Mainly include cut-off valve and ball valve, they typically used for open or cut off the pipeline pathways. Needle valve valve core is a very sharp cone, type needle valve type compression ability than other types of valve Stronge

Stainless steel needle valve body etc are larger and brass pin type valve, because generally make type stainless steel needle valve With temperature is higher, the pressure is high, so ball valve manufacturer in the central stuffing box design this doing is higher, in case of leakage with

Needle valve flow coefficient of the calculation with the following formula: Q - big flow m3 / h; The proportion of G - (1) is commonly used in; P1 - inlet pressure bar; The P2 - outlet pressure bar; Delta P = (P1, P2 bar. And Cv with Kv relationship is as follows: Cv = 1.17 Kv, accurate,

Electric actuators are divided into single function and dual efficacy of two kind of way. Once the single function type depends on the advantage, switching power supply common failures occurred.